}
}
+static void
+queue_events (struct ev_watcher **events, int eventcnt, int type)
+{
+ int i;
+
+ for (i = 0; i < eventcnt; ++i)
+ event (events [i], type);
+}
+
/*****************************************************************************/
static struct ev_timer **atimers;
/*****************************************************************************/
+static struct ev_idle **idles;
+static int idlemax, idlecnt;
+
+static struct ev_check **checks;
+static int checkmax, checkcnt;
+
+/*****************************************************************************/
+
#if HAVE_EPOLL
# include "ev_epoll.c"
#endif
/*****************************************************************************/
-static ev_hook hooks [EVHOOK_NUM];
-
-void
-ev_hook_register (int type, ev_hook hook)
-{
- hooks [type] = hook;
-}
-
-void
-ev_hook_unregister (int type, ev_hook hook)
-{
- hooks [type] = 0;
-}
-
-static void
-hook_call (int type)
-{
- if (hooks [type])
- hooks [type] ();
-}
-
static void
fd_reify (void)
{
double block;
ev_loop_done = flags & EVLOOP_ONESHOT;
- do
+ if (checkcnt)
{
- hook_call (EVHOOK_PREPOLL);
+ queue_events (checks, checkcnt, EV_CHECK);
+ call_pending ();
+ }
+ do
+ {
/* update fd-related kernel structures */
fd_reify ();
/* calculate blocking time */
- if (flags & EVLOOP_NONBLOCK)
+ if (flags & EVLOOP_NONBLOCK || idlecnt)
block = 0.;
else
{
/* update ev_now, do magic */
time_update ();
- hook_call (EVHOOK_POSTPOLL);
-
- /* put pending timers into pendign queue and reschedule them */
+ /* queue pending timers and reschedule them */
/* absolute timers first */
timers_reify (atimers, atimercnt, ev_now);
/* relative timers second */
timers_reify (rtimers, rtimercnt, now);
+ /* queue idle watchers unless io or timers are pending */
+ if (!pendingcnt)
+ queue_events (idles, idlecnt, EV_IDLE);
+
+ /* queue check and possibly idle watchers */
+ queue_events (checks, checkcnt, EV_CHECK);
+
call_pending ();
}
while (!ev_loop_done);
signal (w->signum, SIG_DFL);
}
+void evidle_start (struct ev_idle *w)
+{
+ if (ev_is_active (w))
+ return;
+
+ ev_start ((struct ev_watcher *)w, ++idlecnt);
+ array_needsize (idles, idlemax, idlecnt, );
+ idles [idlecnt - 1] = w;
+}
+
+void evidle_stop (struct ev_idle *w)
+{
+ idles [w->active - 1] = idles [--idlecnt];
+ ev_stop ((struct ev_watcher *)w);
+}
+
+void evcheck_start (struct ev_check *w)
+{
+ if (ev_is_active (w))
+ return;
+
+ ev_start ((struct ev_watcher *)w, ++checkcnt);
+ array_needsize (checks, checkmax, checkcnt, );
+ checks [checkcnt - 1] = w;
+}
+
+void evcheck_stop (struct ev_check *w)
+{
+ checks [w->active - 1] = checks [--checkcnt];
+ ev_stop ((struct ev_watcher *)w);
+}
+
/*****************************************************************************/
#if 1
fprintf (stderr, "signal %x,%d\n", revents, w->signum);
}
+static void
+gcb (struct ev_signal *w, int revents)
+{
+ fprintf (stderr, "generic %x\n", revents);
+}
+
int main (void)
{
struct ev_io sin;
struct ev_timer t[10000];
-#if 1
+#if 0
int i;
for (i = 0; i < 10000; ++i)
{
evsignal_set (&sig, SIGQUIT);
evsignal_start (&sig);
+ struct ev_check cw;
+ evw_init (&cw, gcb, 0);
+ evcheck_start (&cw);
+
+ struct ev_idle iw;
+ evw_init (&iw, gcb, 0);
+ evidle_start (&iw);
+
ev_loop (0);
return 0;
/* eventmask, revents, events... */
#define EV_UNDEF -1 /* guaranteed to be invalid */
-#define EV_NONE 0
-#define EV_READ 1
-#define EV_WRITE 2
-#define EV_TIMEOUT 4
-#define EV_SIGNAL 8
+#define EV_NONE 0x00
+#define EV_READ 0x01
+#define EV_WRITE 0x02
+#define EV_TIMEOUT 0x04
+#define EV_SIGNAL 0x08
+#define EV_IDLE 0x10
+#define EV_CHECK 0x20
/* shared by all watchers */
#define EV_WATCHER(type) \
int active; /* private */ \
int pending; /* private */ \
void *data; /* rw */ \
- void (*cb)(struct type *, int revents) /* rw */
+ void (*cb)(struct type *, int revents) /* rw */ /* gets invoked with an eventmask */
#define EV_WATCHER_LIST(type) \
EV_WATCHER (type); \
struct type *next /* private */
+/* invoked at a specific time or after a specific time, repeatable */
struct ev_timer
{
EV_WATCHER_LIST (ev_timer);
unsigned char is_abs; /* ro */
};
+/* invoked when fd is either EV_READable or EV_WRITEable */
struct ev_io
{
EV_WATCHER_LIST (ev_io);
int events; /* ro */
};
+/* invoked when the given signal has been received */
struct ev_signal
{
EV_WATCHER_LIST (ev_signal);
int signum; /* ro */
};
+/* invoked when the nothing else needs to be done, keeps the process from blocking */
+struct ev_idle
+{
+ EV_WATCHER (ev_idle);
+};
+
+/* invoked for each run of the mainloop, just before the next blocking vall is initiated */
+struct ev_check
+{
+ EV_WATCHER (ev_check);
+};
+
#define EVMETHOD_NONE 0
#define EVMETHOD_SELECT 1
#define EVMETHOD_EPOLL 2
-int ev_init (int flags);
+int ev_init (int flags); /* returns ev_method */
extern int ev_method;
+/* these three calls are suitable for plugging into pthread_atfork */
void ev_prefork (void);
void ev_postfork_parent (void);
void ev_postfork_child (void);
void ev_loop (int flags);
extern int ev_loop_done; /* set to 1 to break out of event loop */
-#define EVHOOK_PREPOLL 0 /* called before updating fds, timers and blocking */
-#define EVHOOK_POSTPOLL 1 /* called after blocking */
-#define EVHOOK_NUM 2 /* just the # of hooks */
-typedef void (*ev_hook)(void);
-void ev_hook_register (int type, ev_hook hook);
-void ev_hook_unregister (int type, ev_hook hook);
-
/* these may evaluate ev multiple times, and the other arguments at most once */
#define evw_init(ev,cb_,data_) do { (ev)->active = 0; (ev)->cb = (cb_); (ev)->data = (void *)data_; } while (0)
#define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */
-void evio_start (struct ev_io *w);
-void evio_stop (struct ev_io *w);
+/* stopping (enabling, adding) a watcher does nothing if it is already running */
+/* stopping (disabling, deleting) a watcher does nothing unless its already running */
+void evio_start (struct ev_io *w);
+void evio_stop (struct ev_io *w);
-void evtimer_start (struct ev_timer *w);
-void evtimer_stop (struct ev_timer *w);
+void evtimer_start (struct ev_timer *w);
+void evtimer_stop (struct ev_timer *w);
void evsignal_start (struct ev_signal *w);
void evsignal_stop (struct ev_signal *w);
+void evidle_start (struct ev_idle *w);
+void evidle_stop (struct ev_idle *w);
+
+void evcheck_start (struct ev_check *w);
+void evcheck_stop (struct ev_check *w);
+
#endif
projects / software / libev.git / commitdiff